EP0031538A3 - Process and apparatus for reclaiming polyurethane - Google Patents
Process and apparatus for reclaiming polyurethane Download PDFInfo
- Publication number
- EP0031538A3 EP0031538A3 EP19800107934 EP80107934A EP0031538A3 EP 0031538 A3 EP0031538 A3 EP 0031538A3 EP 19800107934 EP19800107934 EP 19800107934 EP 80107934 A EP80107934 A EP 80107934A EP 0031538 A3 EP0031538 A3 EP 0031538A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- reclaiming
- polyurethane
- reclaiming polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2951617 | 1979-12-21 | ||
DE2951617A DE2951617C2 (de) | 1979-12-21 | 1979-12-21 | Verfahren und Anlage zur Aufbereitung von Polyurethan |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0031538A2 EP0031538A2 (de) | 1981-07-08 |
EP0031538A3 true EP0031538A3 (en) | 1982-01-27 |
EP0031538B1 EP0031538B1 (de) | 1985-11-21 |
Family
ID=6089198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800107934 Expired EP0031538B1 (de) | 1979-12-21 | 1980-12-16 | Verfahren und Anlage zur Aufbereitung von aus Abfallstoffen erhaltenem Polyurethan |
Country Status (4)
Country | Link |
---|---|
US (1) | US4339358A (de) |
EP (1) | EP0031538B1 (de) |
JP (1) | JPS56106917A (de) |
DE (1) | DE2951617C2 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3232461A1 (de) * | 1982-09-01 | 1984-03-01 | Bayer Ag, 5090 Leverkusen | Verfahren zum kontinuierlichen glykolytischen hochtemperatur-abbau von polyurethankunstoffabfaellen in schneckenmaschinen |
US5648431A (en) * | 1990-09-27 | 1997-07-15 | Michael Demuth | Process for the utilization of plastics |
US5089571A (en) * | 1990-12-04 | 1992-02-18 | The Dow Chemical Company | Regenerated, high molecular weight, thermoplastic resins and process for regenerating thermoplastic resins |
US5672631A (en) * | 1991-04-24 | 1997-09-30 | Pauls; Mathias | Method for processing packaging remnants with recovery of materials |
US5814674A (en) * | 1992-04-23 | 1998-09-29 | Rathor Ag | Method for processing residue-containing packages |
US5208379A (en) * | 1992-05-14 | 1993-05-04 | Arco Chemical Technology, L.P. | Hydrolysis of polyurethanes |
DE4316190C1 (de) * | 1993-05-14 | 1994-12-08 | Hennecke Gmbh Maschf | Verfahren und Vorrichtung zum Aufbereiten von Polyurethanschaumstoff-Abfällen, insbesondere Weichschaumstoff-Abfällen, zur Wiederverwertung als Zuschlagstoffe bei der Polyurethanherstellung |
DE4323558C2 (de) * | 1993-07-14 | 2001-02-15 | Gore & Ass | Verfahren zur Isolierung und Wiederverwertung von Textilmaterialien aus polyurethanverklebten Textilverbundlaminaten |
DE4421902A1 (de) * | 1994-06-23 | 1996-01-04 | Bayer Ag | Verfahren zur Herstellung von Hydroxylgruppen aufweisenden Verbindungen aus (Polyurethan)Polyharnstoffabfällen |
DE4433834C1 (de) * | 1994-09-22 | 1995-10-12 | Daimler Benz Ag | Verfahren zur Rückgewinnung von Sekundärpolyolen aus mit nichtglykolysierbaren Stoffen vermischten Polyaddukten von Diolen und Diisocyanaten |
US6013685A (en) * | 1995-07-22 | 2000-01-11 | Rathor Ag | Process for recycling packings |
DE19540949A1 (de) * | 1995-11-03 | 1997-05-07 | Bayer Ag | Unter Einsatz von Recycling-Polyolen hergestellte Polyurethan-Verbundkörper (Sandwichelemente), ein Verfahren zu deren Herstellung sowie deren Verwendung |
JP2000001677A (ja) * | 1998-06-17 | 2000-01-07 | Yoichi Wada | 高分子系廃棄物の熱分解装置 |
US6837950B1 (en) | 1998-11-05 | 2005-01-04 | Interface, Inc. | Separation of floor covering components for recycling |
BR9805620A (pt) * | 1998-12-23 | 2000-09-26 | Luiz Carlos Oliveira Da Cunha | Processo para reciclagem de poliuretanos |
US6994464B2 (en) * | 2002-04-11 | 2006-02-07 | Mobius Technologies, Inc | Control system and method for continuous mixing of slurry with removal of entrained bubbles |
US6860289B2 (en) * | 2002-04-11 | 2005-03-01 | Robert Donald Villwock | Surge tank |
US7029162B2 (en) * | 2002-04-11 | 2006-04-18 | Mobius Technologies, Inc. | Process and apparatus for continuous mixing of slurry with removal of entrained bubbles |
US20030233937A1 (en) * | 2002-04-11 | 2003-12-25 | Mobius Technologies, Inc., A California Corporation | Apparatus and method for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid |
JP2004168956A (ja) * | 2002-11-22 | 2004-06-17 | Toshiba Corp | ウレタン樹脂の処理方法、ウレタン樹脂分解生成物、再生樹脂の製造方法、及び再生樹脂 |
HU3201U (en) * | 2006-02-08 | 2006-12-28 | Csokai Viktor Dr | Apparatus for recycling of pvc |
PL232824B1 (pl) | 2015-05-12 | 2019-07-31 | Politechnika Gdanska | Sposób glicerolizy odpadów poliuretanowych |
JP2024501461A (ja) | 2020-12-14 | 2024-01-12 | コベストロ、ドイチュラント、アクチエンゲゼルシャフト | ポリウレタンフォームから原料を回収する方法 |
CN113637222A (zh) * | 2021-08-13 | 2021-11-12 | 浙江工业大学 | 一种聚氨酯软质泡沫多功能酸解助剂及其合成方法与应用 |
EP4345094A1 (de) | 2022-09-30 | 2024-04-03 | Covestro Deutschland AG | Verfahren zur phosgen-herstellung mit rückführung von kohlendioxid aus wertstoffrecycling |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2937151A (en) * | 1955-06-27 | 1960-05-17 | Goodyear Tire & Rubber | Method for reclaiming cured cellular polyurethanes |
US3123577A (en) * | 1964-03-03 | Method of liquefying cellular | ||
DE1229720B (de) * | 1964-12-30 | 1966-12-01 | Continental Gummi Werke Ag | Verfahren zum Regenerieren von Abfaellen vernetzter Polyurethanelastomerer |
US3954681A (en) * | 1973-05-25 | 1976-05-04 | Whittaker Corporation | Method of reclaiming cured polyurethane elastomers |
EP0001679A1 (de) * | 1977-09-15 | 1979-05-02 | Max Klein | Polyurethanpolymere in Form von Mikropartikeln, Verfahren zu deren Herstellung und ihre wässrigen Dispersionen |
DE2759054A1 (de) * | 1977-12-30 | 1979-07-12 | Apprich Johannes | Polyolhaltige fluessigkeiten aus polyurethanabfaellen, verfahren zu ihrer herstellung und ihre verwendung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3109824A (en) * | 1960-11-14 | 1963-11-05 | Mobay Chemical Corp | Method of dissolving polyurethanes and polyureas using tall oil |
JPS4823255B1 (de) * | 1970-04-27 | 1973-07-12 | ||
CA1042146A (en) * | 1974-04-29 | 1978-11-07 | Benjamin Tucker | Process for reclaiming flexible polyurethane foam |
JPS5171381A (en) * | 1974-12-19 | 1976-06-21 | Bridgestone Tire Co Ltd | Horiuretanfuoomuno bunkaikaishuho |
DE2834431C3 (de) * | 1978-08-05 | 1981-05-14 | Th. Goldschmidt Ag, 4300 Essen | Verfahren zur schonenden Aufarbeitung von Abfällen aus Urethan- und/oder Harnstoffgruppen enthaltenden organischen Polyaddukten |
-
1979
- 1979-12-21 DE DE2951617A patent/DE2951617C2/de not_active Expired
-
1980
- 1980-12-16 EP EP19800107934 patent/EP0031538B1/de not_active Expired
- 1980-12-19 US US06/218,260 patent/US4339358A/en not_active Expired - Fee Related
- 1980-12-22 JP JP18060480A patent/JPS56106917A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123577A (en) * | 1964-03-03 | Method of liquefying cellular | ||
US2937151A (en) * | 1955-06-27 | 1960-05-17 | Goodyear Tire & Rubber | Method for reclaiming cured cellular polyurethanes |
DE1229720B (de) * | 1964-12-30 | 1966-12-01 | Continental Gummi Werke Ag | Verfahren zum Regenerieren von Abfaellen vernetzter Polyurethanelastomerer |
US3954681A (en) * | 1973-05-25 | 1976-05-04 | Whittaker Corporation | Method of reclaiming cured polyurethane elastomers |
EP0001679A1 (de) * | 1977-09-15 | 1979-05-02 | Max Klein | Polyurethanpolymere in Form von Mikropartikeln, Verfahren zu deren Herstellung und ihre wässrigen Dispersionen |
DE2759054A1 (de) * | 1977-12-30 | 1979-07-12 | Apprich Johannes | Polyolhaltige fluessigkeiten aus polyurethanabfaellen, verfahren zu ihrer herstellung und ihre verwendung |
Non-Patent Citations (2)
Title |
---|
ADVANCES IN POLYURETHANE TECHNOLOGY Publ. MacLaren & Sons, London (GB) Kapitel 1, Isocyanate Reactions, Seiten 7-8, 1.3.1.: "Primary Reactions". * |
PAUL F. BRUINS: "Polyurethane Technology", Kapitel 1, Interscience Publishers, london (GB) Seiten 7-8: "Aliphatic Isocyanates". * |
Also Published As
Publication number | Publication date |
---|---|
EP0031538A2 (de) | 1981-07-08 |
US4339358A (en) | 1982-07-13 |
JPS56106917A (en) | 1981-08-25 |
EP0031538B1 (de) | 1985-11-21 |
DE2951617A1 (de) | 1981-07-02 |
DE2951617C2 (de) | 1985-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): CH FR GB IT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): CH FR GB IT |
|
17P | Request for examination filed |
Effective date: 19820712 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): CH FR GB IT LI |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19851121 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19851121 |
|
EN | Fr: translation not filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19881118 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19950327 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19951231 Ref country code: CH Effective date: 19951231 |
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REG | Reference to a national code |
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